Specification :

Chemical formula: NH4H2PO4
Molecular weight: 115
Standard executed: Q/70894764 01-1998

Properties:
White granular crystal; Relative density at 1. 803, melting point at 190'C, easily soluble in water, slightly soluble in alcohol, insoluble in ketone, PH value of 1% solution is 4. 5.

Technical specifications:
No Specifications Industrial Grade Food Grade
1 Main contents%e 99. 0 99. 0
2 Phosphorus pentoxide%e 61. 0 61. 0
3 Nitrogen, as N %e 11. 8 11. 8
4 PH value (1% solution) 4. 4-4. 8 4. 4-4. 8
5 Moisture%d 0. 2 0. 2
6 Heavy metal, as Pb%d 0. 001
7 Arsenic, as As%d 0. 0003
8 Fluoride as F%d 0. 005
9 Water insoluble %d 0. 10 0. 10

Application:
As a fire-prevention agent for fabric, timber and paper, as well as a fire-prevention coating, and dry powder for fire extinguisher. For food grade it is mainly used as a fermentation agent, nourishment, and so on. Used as a high effective non-chloride N, P compound fertilizer in agriculture. Its total nourishment (N=P2O5) is at 73%, and may be used as a basic raw material for N, P and K compound fertilizer.